Device for staging actions prevention for underwell hydraulic tools
A hydraulic tool and action technology, applied in drilling equipment, wellbore/well components, earthwork drilling and production, etc., can solve the problems of rework, economic loss, poor control of downhole speed, etc., and achieve the effect of ensuring the success of the operation
Inactive Publication Date: 2010-08-18
陈飞
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Problems solved by technology
However, the lower part of these tools is equipped with a check valve (oil well pump). Because sometimes the running speed is not easy to control and the running speed is too fast, the tubing pressure is often much higher than the casing pressure in an instant, and the pin is cut off or the spring is compressed. There is a problem of movement in the middle of going down the well, resulting in unsuccessful oil and water well operations and resulting in economic losses
The above-mentioned tools cannot meet the requirements for the pressure test and seal of the tubing that is run in during the downhole process. For example, the tubing anchor in patent No. 03272577.9, when the tubing is pressed before it reaches the designed position, the slips will be opened and anchored on the casing. up, so that the oil well string is anchored and cannot continue to run down the oil pipe, resulting in rework
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[0012] The first embodiment of the present invention will be described in detail below with reference to FIG. 1 .
[0013] The first kind of embodiment is shown in Fig. 1, and it is made up of inner pipe 1-1, sealing cylinder 1-2, connecting body 1-3, sliding sleeve 1-4, sliding sleeve sealing ring 1-5, joint 1-6. The sealing cylinder 1-2 is set on the connecting body, the lower thread of the inner pipe 1-1 is connected with the upper thread of the connecting body 1-3, the lower part of the connecting body 1-3 is connected with the joint 1-6, and the connecting body (1-3) has a The Unicom hole is sealed by the sliding sleeve (1-4). The sliding sleeve sealing ring 1-5 is set in the sealing groove of the sliding sleeve 1-4, the sliding sleeve 1-4 is installed on the connecting body 1-3, and the two sets of sealing rings on the sliding sleeve 1-4 are on the connecting body 1-3 The Unicom hole is up and down, so that the sliding sleeve 1-4 seals the Unicom hole, and the upper par...
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This invention relates to hydraulic tool prevent middle operation device, which comprises inner tube, sealed cylinder, connection part, slide cover, slide cover sealed ring and joints, hydraulic isolator fixed on oil water well, anti-top tilt, hydraulic loosing, hydraulic oil tube anchor, oil tube anchor and discharge device, wherein, it uses slide cover to seal down well hydraulic tools connection hole to realize middle pressure sealing at designed position; the down draw oil pump piston pushes slide cover to connection hole and the pressure transmission tool inside device makes the operation in work status.
Description
1. Technical field [0001] The invention relates to a downhole tool for an oil-water well in an oil field, in particular to an anti-midway action device for a downhole hydraulic tool. 2. Background technology [0002] Oil and water well downhole hydraulic tools are equipped with anti-midway action devices, such as oil and water well hydraulic packers, anti-top slips, hydraulic drop-offs, hydraulic oil pipe anchors, oil pipe anchors, and liquid discharge devices. After the position is reached, the pressure on the ground will cut off the pin on the anti-midway action device or compress the spring, so that the tool can move to make it in working condition. However, the lower part of these tools is equipped with a check valve (oil well pump). Because sometimes the running speed is not easy to control and the running speed is too fast, the tubing pressure is often much higher than the casing pressure in an instant, and the pin is cut off or the spring is compressed. There is a pr...
Claims
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IPC IPC(8): E21B17/02E21B23/00
Inventor 郜希辉张英凯李庆红郭文峰
Owner 陈飞